baber/WOPTO huggingface dataset:
Patent GB-1204343-A (GB)
Title: Coated glass fibers
IPC: C03C25/10
Filed: 1967-10-05
Abstract: 1,204,343. Coated glass fibres. PPG INDUSTRIES Inc. 5 Oct., 1967 :[29 Dec., 1966], No. 45348/67. Heading B2E. [Also in Division D1] Glass fibres are coated and impregnated with an aqueous adhesive composition containing heat-curable resin, elastomer latex solid and volatile liquid components and passed through a dielectric heater of 5-3000 megacycles to volatilize the liquid components without substantially curing the resin to obtain a product which is sufficiently free of tack to permit processing. The tack-free elastomer coated glass fibres may be processed say, by winding, twisting, plying and weaving and combined with an elastomeric material. The term "elastomer" includes natural, or synthetic rubbers, e.g. chloroprene butadiene, isoprene polymers and copolymers thereof with acrylonitrile, styrene and isobutylene. The glass fibres may be in the form of strand, yarns, cords, fabrics, chopped fibres. In an example a rubber adhesive comprised resorcinol, formaldehyde, sodium hydroxide, butadiene-styrene-vinylpyridine terpolymer, ammonium hydroxide and water. Five strands of sized glass fibre with one-half turn per inch of twist were combined in parallel relation and passed under slight tension over rotating rollers 9 partially suspended in the adhesive 13 in Figure 1. The coated strands were passed vertically through a dielectric drying oven 17 and then upwardly through a hot gas oven 21 maintained at 300 to 500F to effect curing of the resorcinolformaldehyde resin.
Patent GB-969715-A (GB)
Title: Unattended sub-station
IPC: B60M3/00
Filed: 1962-11-30
Abstract: 969,715. Rectifying. INTERNATIONAL RECTIFIER CORPORATION. Nov. 30, 1962 [Dec. 26, 1961], No. 45413/62. Heading H2F. [Also in Division H1] The invention relates to a power distribution system for electric traction systems in which D.C. operated vehicles are supplied with D.C. from a number of semi-conductor rectifying substations along the route. According to the invention these sub-stations contain step-down transformers, rectifiers and protective gear and are mounted on poles. Preferably the distribution of sub-stations is related to the traffic density so that each sub-station supplies one vehicle. Fig. 1 shows the circuit of one substation. The three-phase transformer 31 is supplied from the mains 10, 11, 12 through tap changing gear 28, 29, 30. The rectifiers 32 to 37, which are shown as single elements, are series parallel combinations of semi-conductor rectifying elements. There is a tuned smoothing arrangement 38, 39 on the D.C. side together with an overload circuit-breaker 40, 41. One of the output leads 24 is earthed, the other, 44, passes through a high voltage bushing in the tank 22 containing the sub-station. On the input side there are fuses 13, 14, 15 and spark gaps 16, 17, 18 and varistors 19, 20, 21 to divert lightning surges. The mechanical arrangement of the sub-station is also described (Figs. 2, 3 and 4, not shown).
Patent GB-1261424-A (GB)
Title: Improvements in and relating to the detection of surface coatings
Inventor: BILLINGTON RICHARD WILLIAM
IPC: G01N17/02
Filed: 1969-09-17
Abstract: 1,261,424. Electro-chemical analysis. WILKINSON SWORD Ltd. Aug.3, 1970 [Sept. 17, 1969], No.45709/69. Heading G1N. The presence of a passivating film on e. g. razor blade strip, is determined by making the strip one electrode of a cell whose other electrode is electro-chemically inert in use e.g. platinum. A first voltage is applied with the platinum as anode for a set time, and then a small reverse voltage is applied (platinum as cathode) and the resulting current is measured. A relay control circuit with capacitor timing is shown. Manual start switch 20 causes all relays to be energized connecting +1À75 volts to the cell; capacitor 22 discharges after e.g. 0À5 secs releasing relay 14 to connect -0À75 volts to the cell and in another e.g. 0À1 secs capacitor 24 discharges sufficiently to release relay 18 which connects the current record 28 in circuit. The cell may be modified by containing the electrolyte in an absorbent pad, to test continuous blade strip.
Patent GB-1116639-A (GB)
Title: Improvements in or relating to variable area turbojet nozzles
Inventor: HOCH RENE GERARD
IPC: F02K1/12
Filed: 1965-11-02
Abstract: 1,116,639. Jet propulsion nozzles. SOCIETE NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Nov. 2, 1965 [Nov. 3, 1964], No. 46265/65. Heading F1J. A jet propulsion nozzle for a gas turbine jet engine comprises a series of pivotally mounted flaps whereby the cross-sectional area of the nozzle may be varied, and a further series of pivotally mounted flaps which in operation are normally held by the pressure of the gaseous jet stream against the inner surfaces of the firstmentioned flaps so as to seal the spaces therebetween but which may be swung inwardly into the jet stream so as to act to silence the nozzle. In the embodiment shown the nozzle comprises a first set of flaps 1 which are pivotally mounted at 4 at the downstream end of the jet pipe 3, the flaps being angularly adjustable by means of jacks 6 so as to vary the outlet area of the nozzle, the jacks acting through linkage indicated at 8, 9, 10 Fig. 3. The flaps are normally adjustable between the positions indicated by angle α. A further series of flaps 2 are pivotally mounted at 5 at the downstream end of the jet pipe and in normal use are held by the gas pressure of the jet stream against the inner surfaces of the flaps 1 so as to prevent leakage of gas through the spaces between adjacent flaps 1, the flaps 2 normally operating between the positions indicated by the angle α, Fig. 4. When it is desired to operate the nozzle as a silenced nozzle however, the flaps 2 are swung inwardly into the jet stream to the position indicated at 2b, Fig. 4, the flaps being moved by means of jacks 11 which act through linkage 14,15. In order to allow for the reduced area of the nozzle in the silenced mode of operation, the flaps 1 are moved automatically to the maximum area position indicated at 1b Fig. 3.
Patent GB-1148061-A (GB)
Title: A method of making a self-locking nut, and a nut when made thereby
Inventor: HANFLAND CURT HERMANN
IPC: F16B39/286
Filed: 1964-11-16
Abstract: 1,148,061. Locking nuts. C. H. HANFLAND. 4 Feb., 1966 [16 Nov., 1964], No. 46654/64. Heading F2H. A self-locking nut is formed by cutting at least one slot 26 or 27 in a nut body to form a spring piece at the nut end and compressing the reduced section resulting from the cutting of the slot (i.e. the section where the spring piece is joined to the nut body) in a direction parallel to the bore axis so that the opposed faces of the slot move axially towards one another. The slotted end of the nut may have a neck portion 28 but this need not be surrounded by the annular recess 23 shown. Reference has been directed by the Comptroller to Specification 1,013,253.
Patent GB-1137267-A (GB)
Title: Improvements in or relating to arrangements for picking up the light radiation emitted by individual points of an object
IPC: H04N3/06
Filed: 1966-10-19
Abstract: 1,137,267. Television. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 19 Oct., 1966 [22 Oct., 1965], No. 46758/66. Heading H4F. [Also in Division G1] An arrangement for producing a televisiontype signal corresponding to the light emitted by individual points of an object O 2  comprises a first lens L 3 , which collimates the diverging light beams from object points 1, 5 and 7 into parallel beams, a polarizer P, a digital light deflector A of the type described in Specification 994,955, which is controlled by voltages applied from generator G so as to deflect parallel beams 6 and 8 from points 5 and 7 to coincide with beam 2 and a lens L 4  which focuses the light beams on to a photo-sensitive detector D. When various voltages are successively applied from generator G to deflector A all the points of object O 2  are successively projected on the photo-detector D, and a television-type signal is obtained from amplifier S. The digital light deflector A consists of a plurality of units, each comprising a Kerr cell, a birefringent prism and a non-birefringent prism. To scan a coloured object three digital deflection devices each having a photo-detector are provided and the light emitter from the object to be scanned is split into three beams of different frequencies by means of dichroic elements, the defection devices being adapted to the various frequencies. To ensure that the photo-detector D supplies a signal of maximum amplitude when the light emitted by object O 2  is polarized, a phaseshifter is provided between the polarizer P and the lens L 3  and is controlled by a signal from amplifier S so that it shifts the direction of polarization to coincide with the direction passed by polarizer P.
Patent GB-1535338-A (GB)
Title: Radar systems
IPC: G05D1/00
Filed: 1975-11-13
Abstract: 1535338 Radar SIEMENS AG 13 Nov 1975 [13 Nov 1974] 46829/75 Heading H4D A radar system is provided with means for detecting manoeuvres of the target in the form of changes in the state of motion, in particular any transition from zero acceleration using a radar receiver incorporating two Kalman filters for the optimum estimation of a variable parameter, the first, for analysing low level target accelerations and the second for higher order accelerations. In Fig. 9, echo signals U are fed to radar receiver Ra where they are converted to digital signals Z k  and applied to computer Re. Switch S, controlled by threshold detector Sw is set to connect signals Sk to a 1st low-level Kalman filter Fl, when no manoeuvre is detected. Filter Fl produces estimated values of a state vector #X k  representative of the target's position from which a prediction value #X k - is derived. The innovation value I k  is formed by the correlation means to establish the difference between each measured value and the relevant prediction value and fed to a shift register Sr of length N. To complete the correlation the numerical values stored in the shift registered positions are then multiplied by respective estimating error factors, S 0 , etc., and added to obtain a total which is applied to threshold detector Sw. Operation of switch S is made, to switch Kalman filters, when said threshold value is exceeded.
Patent GB-1373090-A (GB)
Title: Screw-threaded components
IPC: F16B33/02
Filed: 1972-04-09
Abstract: 1373090 Rolling screw threads R BUCKLEY 20 March 1973 [9 April 1972] 47092/71 Heading B3M [Also in Division F2] Flat or cylindrical dies are used to roll the middle convolutions 22 of threads of a bolt so that their crests are displaced towards the head of the bolt or alternatively the roots of these threads are displaced away from the head. The pitch interval of the crests P1, P2 and roots P of the upper, lower and middle convolutions is constant except at the intervals P3, P4 between the upper and middle convolutions and the middle and lower convolutions. The effect is such that when engaged with a nut having a standard thread, interaction between the two tends to lock them together. The flat or cylindrical dies have profiles corresponding to the shape of the thread convolutions and in the case of flat dies 30, 32 the teeth 36, 38 for forming the convolutions are of constant cross-section along their length. Alternatively an insert 42 for rolling the middle convolutions 22 may be included in the dies 40.
Patent GB-1201794-A (GB)
Title: Photographic copying apparatus
IPC: G03G15/26
Filed: 1967-10-17
Abstract: 1,201,794. Electrophotographic copier. DENNISON MFG. CO. Ltd. Oct.17, 1967 [Oct.17, 1966], No.47263/67. Heading G2H. An electro-photographic copier comprises means for feeding a series of photo-sensitive sheets along a printing path to an exit, an actuator for actuating a timer to start a time delay interval, a switch actuated by the timer at the end of the interval to stop the feeding means, and a sensor for sensing sheets leaving the path, the timer being responsive to the sensor to intercept the time delay interval and prevent stopping of the feed means by the timer actuated switch. As shown in Fig.1, photosensitive paper is drawn, by rollers 22 from a drum 21, past a pre-exposed lamp 20 and corona discharge device 19, is cut at 23 and exposed at an image plane 2 to an image of an original placed on a record window 1 under an automatically raised and lowered cover 12, the original being illuminated by stroboscopic lamps 6 in a light box 7, and the image being projected on to the plane 2 by a lens 3 and a mirror 4. The sensitized paper is developed in a tray 48 using toner from a reservoir 47, dried in a drier 32 and fed by rollers 29 to an exit roller 33 and past an exit switch 22. The feeding and cutting mechanisms are driven by a motor (M1), Fig.2 (not shown) through a sprocket chain (71) sprockets (72-77), electromagnet clutch controlled cam shaft 35 and cutter cam 36. The exposure is tripped by a switch S19 or S20 depending on the length of the original, and actuation of switch S5A at the begining of the cycle triggers a delay relay (K31) Fig.4 (not shown) which stops the feed means at the end of the delay interval unless the relay K31 is reset by tripping of a switch S22 by a sheet passing through the exit of the printing path. This prevents waste due to paper jamming. The copier may print single or multiple copies and includes circuits indicating exhaustion of sensitive paper and toner, and circuits indicating malfunctions such as exit roll wrapping and cutter failure.
Patent GB-1113358-A (GB)
Title: Apparatus for use in manoeuvring vehicles
Inventor: LOBELLE MARCEL JULES ODILON
IPC: B60P3/00
Filed: 1965-11-08
Abstract: 1,113,358. Vehicle movers. M. L. AVIATION CO. Ltd. 8 Feb., 1967 [8 Nov., 1965; 18 Feb., 1966], Nos. 47296/65 and 7314/66. Addition to 845,105. Heading B7H. A vehicle mover comprises a first ground-engaging driven roller 3, a second roller 19 driven with the same peripheral speed as, but in the opposite sense to, the roller 3 and a tensioning link 21, of adjustable length, which has attachment means at one end and by which a wheel 20 of an aircraft or other vehicle to be moved is maintained in engagement with and rotated by the roller 19 to propel the vehicle. The roller 19 and its supporting links 18 at each end and the tensioning link 21 may comprise an accessory detachably secured to a vehicle having a wheel with an exposed peripheral surface adjacent one end, the roller being engageable with both the vehicle wheel and a wheel of a vehicle to be moved. The roller 3 comprises a pair of spaced-apart wheels which are driven by an engine 4 through a pair of chains 8 and double-reduction gearing 11, 12, 14, 15 and the roller 19 is driven by engagement with the roller 3. The tensioning link 21 comprises a cable 21 running over a pulley 26 to an hydraulic jack 27, by which the tension and length of the link is adjusted and sleeves 24 which rotate on the cable 21, if engaged by the wheel 20, to prevent abrasion. A pair of wheels 31 is provided by which the roller 3 may be raised from the ground.
Patent GB-1187029-A (GB)
Title: A Method of Producing Photographic Images.
Inventor: PEE PAUL DESIREE VAN
IPC: G03C7/392
Filed: 1966-10-24
Abstract: 1,187,029. Photographic direct-positive process. GEVAERT-AGFA N.V. Oct.12, 1967 [Oct.24, 1966], No.47629/66. Addition to 1,151,363. Heading G2C. Direct positive images are produced by the process of Specification 1,151, 363 by imagewise exposing a silver halide emulsion which forms mainly internal latent image, and is in contact with at least one substance releasing I<SP>-</SP> in aq. medium, and surface developing while exposing to low intensity light, characterized in that the substance releasing I- is partly or wholly molecular I 2  and/or at least one of its addition products. The addition product may be the addition product of iodine with polyvinyl pyrrolidone, with a polyalkylene or with a quaternary ammonium compound. The said substance may be added as a soln. in H 2 O or a lower alcohol e.g. ethanol. The emulsion may also contain a H 2 O-soluble inorganic iodide e.g. KI and at least one compound setting free Br<SP>-</SP> in aq. medium e.g. KBr. The material, which may contain the developer, and the process details are otherwise as in Specification 1,151,363. The use of tetraethylammonium iodide-3-iodine as the substance releasing I<SP>-</SP> is disclaimed.
Patent GB-1496481-A (GB)
Title: Security system
IPC: G08B13/08
Filed: 1974-12-12
Abstract: 1496481 Security system BRITISH RAILWAYS BOARD 12 Dec 1974 [12 Oct 1973] 47700/73 Heading G4H A security system for controlling access to a security zone, which access is gained through at least two sequentially opened doors, comprises a plurality of doors each provided with a lock having a keep and a respective electric control circuit comprising logic circuitry, Fig. 3, for ensuring that it is correctly shut and locked when required. The security area may be a room containing a safe (Fig. 1, not shown) to which access is obtained via a series of doors only one of which may normally be opened at a time (unless specified overriding conditions obtain), or an office corridor (Fig. 2) divided into zones made safe in turn before connecting doors, A, F, K, can be operated. The logic circuitry of each door (Figs. 4-5, not shown) checks that each door is closed and locked when it should be, receives command signals from a control unit (Figs. 8-9, not shown), and generates alarm signals if a door mechanism would not lock if required to do so, if a door has been forced open, and if a connecting cable has been cut or shorted. An alarm signal causes all doors to lock when they can do so. The first alarm signal is fed to a delay circuit (Fig. 6, not shown) incorporating a counter (50), which operates a "bleep" alarm; the other alarm signals are fed to the circuit of Fig. 7 which operate relays RLY1, RLY2 to produce police and local alarm signals. A third input to this circuit (inverters 61-63) prevents the system being fully turned on until all the doors are interlocking correctly; in this case, and if there are no alarm signals, transistor T7 conducts, to cause a relay RLY3 to operate a switch SC having contacts S1-S3. The doors may be opened (subject to the interlocking conditions) by pressing a button in the control unit; the buttons may be replaced or supplemented by time-clock operated switches. Power supply may be from a battery (Fig. 10, not shown); the supply to a door is reduced in the event of a short circuit, and also when the door has been locked. A fire alarm switch is incorporated, operation of which causes power to be disconnected from all doors, which are unlocked.
Patent GB-1439413-A (GB)
Title: Boilers
IPC: F22B1/16
Filed: 1973-10-12
Abstract: 1439413 Boilers MITSUI SHIPBUILDING & ENG CO Ltd 12 Oct 1973 [16 Oct 1972] 47850/73 Heading F4A In a once-through boiler a drum 1 is provided with an inlet port 2 and an outlet port 3 to enable heating fluid to be passed through the drum, a downcomer chamber 10 coaxial with a heating chamber 9 is provided in the drum, water inlet pipes 8 are connected to downcomer pipes 16 provided in the downcomer chamber 10, and helical coil pipes 14 are provided in the heating chamber 9 and connected to discharge pipes 7 and to the downcomer pipes 16, each downcomer pipe 16 being smaller in diameter than its associated helical coil pipe 14.
Patent GB-1184641-A (GB)
Title: Method for Providing Oriented Pole Pieces in a Dynamoelectric Machine.
IPC: H02K15/03
Filed: 1968-10-09
Abstract: 1,184,641. Core constructions. WESTING- HOUSE ELECTRIC CORP. 9 Oct., 1968 [7 Dec., 1967], No. 47851/68. Heading H2A. [Also in Division H1] Oriented polepieces for permanent magnet members 6-9 of a dynamo electric machine having a frame 5 are provided by filling cavities 30 within the frame 5 with a hardenable, non- magnetic matrix containing orientable ferromagnetic particles, establishing a magnetic field whose lines of force pass through the members 6-9 and matrix, and fixing the matrix with the particles oriented to the field. As shown, ferrite slots 6-9 are located by pins 26 and members 27, 28 fixed to the base of a die. A further frame 33 carrying cores 34, 35 and winding 36 establishes the magnetizing field for the members 6-9 and filler. The filler may comprise a hot thermoplastic, a cold powder, a castable liquid resinous plastic such as epoxy, or a thermosetting phenolic resin, all containing iron particles of typical dimension 0.06 ins and being cured under heat and pressure. The magnets 6-9 may be irregularly shaped and are of strontium, barium or lead ferrites.
Patent GB-1364559-A (GB)
Title: Container end wall construction
IPC: B65D83/14
Filed: 1971-10-14
Abstract: 1364559 Can ends AMERICAN CAN CO 14 Oct 1971 [8 April 1971] 47933/71 Heading B8D [Also in Division F1] An end wall 18 for a pressurized container comprises a concave dome 22, frustro-conical portion 24, countersink wall 26, and a flange 28 for attachment to the container side wall. The portion 24 is preferably at an angle between 38 to 42 degrees.
Patent GB-1084728-A (GB)
Title: Improvements in or relating to combined drier and cooler apparatus
IPC: C13B40/00
Filed: 1964-11-25
Abstract: 1,084,728. Drying and cooling granular material. MASCHINENFABRIK BUCKAU R. WOLF A.G. Nov. 25, 1964 [Nov. 26, 1963], No. 48009/64. Headings F4G and F4U. In apparatus for drying and cooling material, e.g. sugar, the material passes by gravity downwardly through drying and cooling zones 3, 2 in a housing 1 in countercurrent to air which enters the base of the cooling zone through pipes 12 and leaves through an aperture 14 in the housing wall, a portion of the air being drawn through an aperture 16 in the base of the drying zone wall and heated in a casing 28 before passage through an aperture 31 in the casing and upward passage through the drying zone to an upper aperture 32 in the housing wall. The two zones are separated by the material falling on to a rotatable and vertically adjustable cap member 22 which is mounted on a rotary shaft 4, which material creates a curtain 26 falling on to a conical member 18 between the two zones. A further curtain 27 is created by a further rotatable cap member 23 above a constricted portion 21 of a stub pipe 20 formed in the base of the conical member 18. The zones may have dished members 5 mounted for rotation on the shaft 4 which centrifugally project the material against associated cones 6 secured to the internal walls of the apparatus.
Patent GB-1482390-A (GB)
Title: Process for colouring of anodised aluminium and aluminium alloys
IPC: C25D11/22
Filed: 1975-11-24
Abstract: 1482390 Colouring anodized aluminium NORSK HYDRO AS 24 Nov 1975 48227/75 Heading C7B An anodized Al (alloy) article is coloured by passing A.C. between it and a counter electrode, e.g. of stainless steel tube or Cu wire, whilst immersed in an acid solution comprising a mixture of a Sn, Cu and/or Ni salt and an In salt. The salts may be sulphates, chlorides or nitrates. H 2 SO 4  and MgSO 4  as electrolyte, 3, 4-sulphophthalic or sulphosalicylic acid as complex former, and/or sulphamic, maleic, tartaric or citric acid as inhibitor may be added to the solution. The article may be D.C. anodized in a solution containing H 2 SO 4  and Al 2 (SO 4 ) 3  and rinsed in H 2 SO 4 -acidified water prior to colouring. A.C. colouring may be effected in two baths, the second being made up of Sn, Cu and/or Ni salt not used in the first bath, together with an In salt. Specification No. 1355619 is referred to.